So apparently, Valve has started work on re-basing SteamOS on kernel version 5.19. This is a big update for them as version 5.19 of the kernel contains many updated drivers for the Steam Deck's hardware.
These updates were discovered by Luke Short on Twitter is is the main developer behind winesapOS.
If you're not familiar, winesapOS is a Linux distro built for gaming. It is based on SteamOS 3 and has many pre-installed utilities like Bottles, Discord, LibreOffice, VLC and more. It also has Steam (of course), Heroic Games Launcher, Lutris, and PolyMC pre-installed for gaming.
Check out Luke's tweet about Valve's update.